Universal shoe tree positioning structure for sole pressing machine

Abstract

The utility model discloses a shoe tree universal positioning structure for a sole pressing machine, which comprises an upper cover, the upper cover is mounted on a bottom die, and the upper cover can be switched between a position where the bottom die is closed and a position far away from the bottom die; the upper cover is provided with an upward protruding extension part, an inner cavity is defined between the extension part and the lower wall of the upper cover, the inner cavity is provided with a vertically-adjusted pressing rod, the pressing rod comprises a main rod and a pressing seat installed at the lower end of the main rod in a swinging mode, the pressing seat swings by a preset amplitude around the axis of the main rod, and the swinging amplitude is smaller than 25 degrees. In the actual design, the pressing seat with the preset swing amplitude is adopted, and the pressing seat rotates by 360 degrees around the axis of the main rod and swings, so that the bottom wall of the pressing seat can be tightly attached to a shoe tree no matter how the inclination angle or position of the shoe tree is, stability during sole pressing is achieved, the situation that a vamp or a shoe sole is displaced is avoided, and the shoe sole pressing efficiency is improved. And the pressing stability is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the field of shoe machines, in particular to a shoe last universal positioning structure used for a sole pressing machine. Background Art

[0002] After the raw materials are cut, sewn and stretched, they have the prototype of shoes, and then they are made into shoes after the upper and sole are bonded. Upper and sole bonding is the process of bonding the outer sole, the upper foot and the insole after the upper is stretched with adhesive. The process of combining the upper and the sole is a major process in the shoemaking process. There are many ways to combine the upper and the sole. Adhesion, vulcanization, molding, injection, and seam are the five basic processes (therefore, semi-automatic equipment is generally used to cooperate with staff for processing). Among them, the viscose process is the most commonly used one in the market. A simple understanding is that after the outsole is placed in the lower mold, the upper with the shoe last is placed on the upper wall of the outsole, and then pressure is applied to make the two fit together.

[0003] Existing pressing machines generally use a pressing block to position the shoe last, thereby reducing its displacement. For example, Chinese patent CN202220542272.4 uses a pressure rod adjustment assembly to apply pressure to the shoe last for positioning. However, the positioning structure is relatively complex, and in actual use, the shoe last may have a certain degree of inclination, then the horizontally arranged pressure rod will have a problem of poor fit, affecting the positioning stability, and then affecting the fit of the inclined surface; at the same time, the structure is also relatively complex and large in size. Utility Model Content

[0004] The main purpose of the utility model is to propose a universal positioning structure for a shoe last used in a sole pressing machine, which aims to adopt a pivotally arranged universal positioning structure to achieve fitting positioning of the shoe last, and has good stability, and can adjust the inclination and height according to actual needs.

[0005] To achieve the above-mentioned purpose, the utility model proposes a universal positioning structure of a shoe last for a sole pressing machine, comprising an upper cover, which is installed on the bottom mold, and the upper cover can be switched between a position where the bottom mold is closed and a position away from the bottom mold; the upper cover is provided with an upwardly protruding extension portion, and an inner cavity is formed between the extension portion and the lower wall of the upper cover, and the inner cavity is provided with a vertically adjustable pressure rod, and the pressure rod comprises a main rod and a pressure seat swingably installed at the lower end of the main rod, and the pressure seat swings with a predetermined amplitude about the axis of the main rod, and the swing amplitude is less than 25 degrees.

[0006] The technical solution of the utility model adopts a pressing seat with a predetermined swing amplitude, so that the pressing seat can rotate and swing 360 degrees about the axis of the main rod. Therefore, no matter what the inclination angle or position of the shoe last is, the bottom wall of the pressing seat can fit tightly with the shoe last, thereby achieving stability during sole pressing, avoiding displacement of the upper or the sole, and effectively ensuring the stability of the pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional schematic diagram of a sole pressing machine;

[0008] Figure 2 This is a cross-sectional view of the sole pressing machine;

[0009] Figure 3 It is a three-dimensional schematic diagram of the upper cover;

[0010] Figure 4 Indication for the covering part Figure 1 ;

[0011] Figure 5 Indication for the covering part Figure 2 ;

[0012] Figure 6 Indication for the covering part Figure 3 ;

[0013] Figure 7 A three-dimensional diagram of the pressure rod Figure 1 ;

[0014] Figure 8 It is the cross-sectional view of the compression rod;

[0015] Fig. 9 A three-dimensional diagram of the pressure rod Figure 2 .

[0016] In the figure,

[0017] 1 is the bottom mold, 10 is the receiving groove, 11 is the top seat,

[0018] 2 is a guide frame, 21 is a guide rod, 22 is a guide sleeve,

[0019] 3 is the upper cover, 31 is the extension part, 32 is the inner cavity,

[0020] 4 is a first driving device, 41 is a connecting rod, 411 is a first rod body, 412 is a second rod body, 413 is a stopper, 42 is a telescopic motor,

[0021] 5 is a pressure rod, 51 is a main rod, 52 is a pressure seat,

[0022] 61 is a limiting groove, 62 is a spherical portion, 63 is a threaded hole,

[0023] 71 is a ring, 72 is a groove,

[0024] 8 is a covering portion, 81 is a profiled groove,

[0025] 91 is a horizontal guide rail, 92 is a horizontal slider,

[0026] 100 is a threaded hole, 101 is a rotary servo motor, 102 is a rack, and 103 is a driving gear. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] like Figures 1 to 9 As shown, a universal positioning structure of a shoe last for a sole pressing machine comprises:

[0031] A bottom mold 1, wherein the bottom mold 1 is provided with a receiving groove 10 for placing the shoe last;

[0032] A guide frame 2, wherein the bottom end of the guide frame 2 is arranged at a position of the bottom mold 1 away from the receiving groove 10, and the top end of the guide frame 2 is provided with a top seat 11;

[0033] The upper cover 3 is arranged on the guide frame 2 and can slide vertically along the height direction thereof. The top seat 11 is provided with a first driving device 4, and the first driving device 4 is used for driving the upper cover 3 to move vertically.

[0034] In the actual design, vertical sliding can be achieved through the cooperation of the guide frame 2 and the upper cover 3, so that a larger opening and closing degree can be achieved between the upper cover 3 and the bottom mold 1, which is convenient for the staff to observe the receiving groove 10, so that the upper and the sole are more accurately aligned, and the stability of the pressing is ensured; at the same time, the lower wall of the upper cover 3 can facilitate the installation and adjustment of the pressing rod 5 and the shoe upper covering structure, thereby improving the applicability of the sole pressing machine, and improving production efficiency and ease of use.

[0035] Specifically, the guide frame 2 includes four guide rods 21 arranged at intervals and a guide sleeve 22 slidably mounted on the guide rods 21. The guide rods 21 are arranged between the bottom mold 1 and the top seat 11, and the guide sleeve 22 is arranged on the upper cover 3, thereby realizing vertical sliding of the upper cover 3 with better stability.

[0036] More specifically, the first driving device 4 is a hydraulic driving motor disposed on the lower wall of the top seat 11, and the driving end of the hydraulic driving motor is connected to the upper wall of the upper cover 3. This embodiment is not shown in the figure, and the upper cover 3 can be moved quickly and stably by the hydraulic driving motor, but the cost is relatively high, especially for some structures that need to be sealed, and the pressure stability requirement is higher.

[0037] In the embodiment of the utility model, the first driving device 4 includes a telescopic motor 42, a connecting rod 41 connected to the driving end of the telescopic motor 42, and the lower end of the connecting rod 41 is connected to the upper end of the upper cover 3. Through the cooperation of the connecting rod 41 and the telescopic motor 42, the upper cover 3 is moved upward by the lever principle, and at the same time, the combination pressure when the upper cover 3 is matched with the bottom mold 1 is guaranteed to ensure the sealing performance.

[0038] Specifically, the connecting rod 41 includes a first rod body 411 whose lower end is pivotally connected to the upper cover 3 and a second rod body 412 pivotally connected to the upper end of the first rod body 411 . The upper end of the rod body is pivotally connected to the lower wall of the top seat 11 .

[0039] In the embodiment of the utility model, the telescopic motor 42 is pivotally mounted on the top seat 11, and the driving end of the telescopic motor 42 is pivotally connected to the middle of the second rod 412. The swinging telescopic motor 42 ensures the vertical travel of the upper cover 3 and the pressing degree.

[0040] Specifically, the telescopic motor 42 is tiltedly disposed on the top seat 11 , so that the upper cover 3 can be opened and closed with relatively small pressure.

[0041] In the embodiment of the utility model, a connecting shaft is provided between the first rod body 411 and the second rod body 412, and a stopper 413 is provided on one side of the connecting shaft. The stopper 413 is used to limit the position of the cover when it is closed, and then the pressure seat 52 is limited by a predetermined swing angle.

[0042] Specifically, the upper cover 3 is provided with an upwardly protruding extension 31, and an inner cavity 32 is formed between the extension and the lower wall of the upper cover 3. The inner cavity 32 is provided with a vertically adjustable pressure rod 5, and the pressure rod 5 includes a main rod 51 and a pressure seat 52 swingably mounted on the lower end of the main rod 51. The pressure seat 52 swings with a predetermined amplitude about the axis of the main rod 51, and the swing amplitude is less than 25 degrees. Through the swing with a predetermined amplitude, the shoe last can be limited, and the setting of the inner cavity 32 also provides a predetermined swing range for the pressure seat 52, so that the shoe last can be closely fitted, effectively ensuring the installation stability.

[0043] Specifically, the upper end of the pressure seat 52 has a limiting groove 61 , and the main rod 51 is provided with a spherical portion 62 extending into the limiting groove 61 . The spherical portion 62 extends into the limiting groove 61 and swings with the end of the limiting groove 61 as a limit.

[0044] In the embodiment of the utility model, the press seat 52 rotates 360 degrees with the axis of the spherical portion 62 as a reference, so no matter what the position of the shoe last is, the press seat 52 can achieve a fit with the shoe last according to the shape or inclination of the shoe last.

[0045] Specifically, the upper cover 3 is provided with a threaded hole 100, the main rod 51 is provided with a threaded portion matching the threaded hole 100, and the upper end of the pressure rod 5 is provided with a nut matching the threaded portion. The relative height of the main rod 51 can be adjusted by adjusting the relative position of the threaded portion, and the nut is used for adjustment and fixing at the same time, so the structure is simple and the production cost is low.

[0046] In the embodiment of the utility model, the bottom wall of the press seat 52 is assembled by a plurality of concentrically arranged rings 71, the plurality of rings 71 are arranged at intervals and a groove 72 is provided between two rings 71, and the groove is provided with an anti-slip pad, thereby ensuring the positioning of the shoe last.

[0047] Specifically, the lower wall of the upper cover 3 is provided with a covering portion 8 that slides along the length direction of the receiving groove 10, the covering portion 8 is provided with a profiling groove 81 that is suitable for the shape of the upper, and the upper wall of the upper cover 3 is provided with a second driving device that drives the covering portion 8 to move. By adjusting the relative position of the covering portion 8, the uppers of different lengths can be fitted, which can reduce the production of templates, that is, a set of molds can be used for the same upper, The processing of different sizes effectively saves template costs and replacement time, effectively improves production efficiency, and is convenient to adjust.

[0048] In the embodiment of the utility model, the lower wall of the upper cover 3 is provided with a horizontal guide rail 91 , and the covering portion 8 is provided with a horizontal slider 92 matched with the horizontal guide rail 91 , thereby ensuring the stable movement of the covering portion 8 .

[0049] Specifically, the horizontal sliding block 92 is provided with a screw through hole, and the covering portion 8 is provided with a screw hole matching the screw through hole, and a screw passes through the screw through hole and is screwed onto the screw hole.

[0050] In the embodiment of the utility model, the second driving device is a rotating device arranged on the upper wall of the upper cover 3, the rotating device is provided with a shaft extending into the inner wall of the upper cover 3, the shaft is provided with a driving gear 103, and the covering part 8 or the slider is provided with a rack 102 matched with the driving gear. Through the meshing of the gear and the rack, the covering part 8 is driven to move along the horizontal slider 92, thereby realizing the position adjustment of the covering part 8.

[0051] Specifically, the rotating device is a rotating servo motor 101 or a manual screw. When it is a manual screw, a locking nut can be set to fix the manual screw. When it is a rotating servo motor 101, it has a built-in locking structure, thereby achieving the limitation of the rack.

[0052] The upper cover 3 is driven to move by the first driving device 4 to achieve a greater opening and closing degree, thereby facilitating the maintenance or disassembly of the covering portion 8 and the pressure seat 52 .

[0053] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A universal positioning structure for a shoe last used in a sole pressing machine, characterized in that: include: An upper cover, which is mounted on the bottom mold and can be switched between a position where the upper cover is molded with the bottom mold and a position away from the bottom mold; The upper cover is provided with an upwardly protruding extension portion, and an inner cavity is formed between the extension portion and the lower wall of the upper cover. The inner cavity is provided with a vertically adjustable pressure rod, which includes a main rod and a pressure seat swingably mounted on the lower end of the main rod. The pressure seat swings with a predetermined amplitude about the axis of the main rod, and the swing amplitude is less than 25 degrees.

2. The universal positioning structure of the shoe last for the sole pressing machine according to claim 1, characterized in that: The upper end of the pressure seat has a limiting groove, and the main rod is provided with a spherical portion extending into the limiting groove. The spherical portion extends into the limiting groove and swings with the end of the limiting groove as a limit.

3. The universal positioning structure of the shoe last for the sole pressing machine according to claim 2, characterized in that: The pressure seat rotates 360 degrees based on the axis of the spherical part.

4. The universal positioning structure of the shoe last for the sole pressing machine according to claim 1, characterized in that: The upper cover is provided with a threaded hole, the main rod is provided with a threaded portion matched with the threaded hole, and the upper end of the pressure rod is provided with a nut matched with the threaded portion.

5. The universal positioning structure of the shoe last for the sole pressing machine according to claim 1, characterized in that: The bottom wall of the pressure seat is assembled by a plurality of concentrically arranged rings, the plurality of rings are arranged at intervals and a groove is provided between two rings, and the groove is provided with an anti-slip pad.

6. The universal positioning structure of the shoe last for the sole pressing machine according to claim 1, characterized in that: The lower wall of the upper cover is provided with a covering part which slides along the length direction of the accommodating groove, the covering part is provided with a contoured groove which is adapted to the shape of the upper surface, and the upper wall of the upper cover is provided with a second driving device which drives the covering part to move.

7. The universal positioning structure of the shoe last for the sole pressing machine according to claim 6, characterized in that: The lower wall of the upper cover is provided with a horizontal guide rail, and the covering portion is provided with a horizontal sliding block matched with the horizontal guide rail.

8. The universal positioning structure of the shoe last for the sole pressing machine according to claim 7, characterized in that: The horizontal sliding block is provided with a screw through hole, and the covering portion is provided with a screw hole matched with the screw through hole. A screw passes through the screw through hole and is screwed onto the screw hole.

9. The universal positioning structure of the shoe last for the sole pressing machine according to claim 8, characterized in that: The second driving device is a rotating device arranged on the upper wall of the upper cover, the rotating device is provided with a shaft portion extending into the inner wall of the upper cover, the shaft portion is provided with a driving gear, and the covering portion or the sliding block is provided with a rack matching the driving gear.

10. The universal positioning structure of the shoe last for the sole pressing machine according to claim 9, characterized in that: The rotating device is a rotating servo motor or a manual screw.

Images